I'm currently exporting a 90 second video (using the Vimeo HD 1080p preset), and it is taking about 30 minutes. This is extremely strange as I have an i7-990x OC'ed @4.5, 12GB RAM, SSD, etc.
I looked at Performance tab in Windows Task Manager, and saw 4 threads were not being used at all, only 20-25% of the CPU was in use, and only 6GB out of the 9GB I specified was being used.
Why isn't Media Encoder making full use of my CPU and RAM?
It'll use whatever it needs. If it didn't use all resources, then it doesn't need them all. Possibly because of a bottleneck somewhere else, or a third party effect that isn't very well multithreaded, etc.
After playing around with it a bit more, it looks like the problem is with Adobe's new Adjustment Layer in Premiere Pro.
Initially, I had an Adjustment Layer sitting across my entire 90 second video with the USM effect in it. This took 30 minutes to render.
As a test, I deleted the Adjustment Layer and applied USM to each individual clip in the 90 second sequence. This cut the rendering time in half, and Media Encoder finished the video in just under 15 minutes.
However, in terms of the resources, I've done additional rendering tests on video without any effects, just raw footage clips together in a sequence, and Media Encoder still doesn't use all available RAM, or all cores/threads, to do the encoding.
As with the other threads with CS6 problems, it sure would be nice to hear from Adobe on this.
I'm having the same problem. But even worst.
For the test, I take a 10 min .mov or mp4 file, simply modify the "scale", and hit the export.
a 10 min file is taking 4 hours to render.
This is on a:
2012 MacBookPro i7 2.3Ghz, 16 GB 1600 DDR3, SSD disk. - Mac OSX 10.7.5
2011 iMac i7 3.7Ghz, 16 GB 1333 Mhz, 7200 RPM HD - Mac OSX 10.7.5
The CPU stays at 90% idle the whole time.
I know this is an old thread, but maybe someone could give me a hand.